The deal was to base all the Dreamliners at YYC and concentrate WestJet's transatlantic and transpacific routes in Calgary.
Apparently WS is achieving some success, particularly with the Paris route, in capturing U.S. connecting traffic to Europe. But I still think it's a missed opportunity not doing a London flight out of both YEG and YWG, each of which had WS service to Gatwick at one point. The GoA should have insisted that at least one Dreamliner be based at EIA in order to provide additional connectivity here--Edmonton is also apparently located in Alberta.
WestJet is still maintaining a solid Caribbean business at YYZ--they recently announced Canada's only non-stop service to Bonaire. But they've recognized that they can't compete with the superior array of European carriers at Pearson, including Air France, British Airways, KLM, SAS Scandinavian, Lufthansa, LOT and TAP Portugal.